Beijing Ouman Petroleum and Geological Drilling Equipments Co., Ltd. (former Northern China Petroleum Quanxing Super-hard Material Drilling Bit Factory) has been growing to the largest professional repair center for drilling bits in China.

The product scopes of our company cover followings: tri-cone bits for oil and geological industries, PDC drilling bits, flat bottom mill shoes, concave bottom mill shoes, ball mill shoes, high-efficiency mill shoes, drilling tools such as rings, elevators and B-shape clamps, various kinds of fishing tools, workover tools as well as oil and geological supporting drilling equipments. 

Chinese petroleum and geological exploration industry is developing rapidly while the shadow of high cost and  risk always goes along with the development of the industry which is still the hot issue for the industry. Aiming to lower the drilling cost and improve the material utilization, Ouman tries every best to make international purchase of a great lot of PDC drilling bits, roller bits, polycrystalline diamond compacts, secondary pieces, defective pieces, second-hand pieces and undertake the repair work for PDC drilling bits as well as supply large quantities of high-quality drilling bits mainly used in oil drilling, geological drilling, well and mine drillings.  

Honesty creates basis for long-term development while quality takes priority in oil drilling industry. All staff of Ouman will spare no effort to offer services for both old and new friends at home and abroad with the most sincere belief, professional technology and favorable price. Wish our service will bring you greatest benefits and wealth!